Materials Data on Er12Co7 by Materials Project
Er12Co7 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are six inequivalent Er sites. In the first Er site, Er is bonded in a 5-coordinate geometry to five Co atoms. There are a spread of Er–Co bond distances ranging from 2.85–3.08 Å. In the second Er site, Er is bonded in a 4-coordinate geometry to four Co atoms. There are a spread of Er–Co bond distances ranging from 2.74–2.92 Å. In the third Er site, Er is bonded in a 4-coordinate geometry to five Co atoms. There are a spread of Er–Co bond distances ranging from 2.78–3.43 Å. In the fourth Er site, Er is bonded in a 5-coordinate geometry to five Co atoms. There are a spread of Er–Co bond distances ranging from 2.79–3.33 Å. In the fifth Er site, Er is bonded to five Co atoms to form distorted corner-sharing ErCo5 tetrahedra. There are a spread of Er–Co bond distances ranging from 2.71–3.50 Å. In the sixth Er site, Er is bonded in a 5-coordinate geometry to five Co atoms. There are a spread of Er–Co bond distances ranging from 2.72–3.09 Å. There are four inequivalent Co sites. In the first Co site, Co is bonded in a 9-coordinate geometry to eight Er and one Co atom. The Co–Co bond length is 2.31 Å. In the second Co site, Co is bonded in a body-centered cubic geometry to eight Er atoms. In the third Co site, Co is bonded in a 10-coordinate geometry to nine Er and one Co atom. In the fourth Co site, Co is bonded in a 8-coordinate geometry to eight Er atoms.